Use [`Math.Ceiling()`][1]

    double result = Math.Ceiling(1.02);


  [1]: http://msdn.microsoft.com/en-us/library/zx4t0t48.aspx

Use Math.Ceiling:
    `Math.Ceiling(value)`

If negative values are present, **Math.Round** has additional options (*in .Net Core 3 or later*). 

I did a benchmark(.Net 5/release) though and Math.Ceiling() is faster and more efficient.

    Math.Round( 6.88, MidpointRounding.ToPositiveInfinity) ==&gt; 7   (~23 clock cycles)
    Math.Round(-6.88, MidpointRounding.ToPositiveInfinity) ==&gt; -6  (~23 clock cycles)

    Math.Round( 6.88, MidpointRounding.AwayFromZero)       ==&gt; 7   (~23 clock cycles)
    Math.Round(-6.88, MidpointRounding.AwayFromZero)       ==&gt; -7  (~23 clock cycles)

    Math.Ceiling( 6.88)                                    ==&gt; 7   (~1 clock cycles)
    Math.Ceiling(-6.88)                                    ==&gt; -6  (~1 clock cycles)


I examine the properties of an object via reflection and continue processing the data type of each property. Here is my (reduced) source:

    private void ExamineObject(object o)
    {
      Type type = default(Type);
      Type propertyType = default(Type);
      PropertyInfo[] propertyInfo = null;

      type = o.GetType();

      propertyInfo = type.GetProperties(BindingFlags.GetProperty |
                                        BindingFlags.Public |
                                        BindingFlags.NonPublic |
                                        BindingFlags.Instance);
      // Loop over all properties
      for (int propertyInfoIndex = 0; propertyInfoIndex &lt;= propertyInfo.Length - 1; propertyInfoIndex++)
      {
        propertyType = propertyInfo[propertyInfoIndex].PropertyType;
      }
    }

My problem is, that I newly need to handle nullable properties, but I have no clue how to get the type of a nullable property.

Find type of nullable properties via reflection

I&#39;m figuring out a mechanism to call an exe from Java and passing in specific parameters. How can I do?

    Process process = new ProcessBuilder(&quot;C:\\PathToExe\\MyExe.exe&quot;).start();
    InputStream is = process.getInputStream();
    InputStreamReader isr = new InputStreamReader(is);
    BufferedReader br = new BufferedReader(isr);
    String line;
    
    System.out.printf(&quot;Output of running %s is:&quot;, Arrays.toString(args));
    
    while ((line = br.readLine()) != null) {
      System.out.println(line);
    }

The previous code works. **But I&#39;m not able to pass parameters in**. MyExe.exe accepts parameters. An other problem is when PathToExe has blank spaces. ProcessBuilder seems not working. For example:

    C:\\User\\My applications\\MyExe.exe

Thank you.

Call an executable and pass parameters

I want to round up always in c#, so for example, from 6.88 to 7, from 1.02 to 2, etc.

How can I do that?

How to round up in c#

<p>I want to round up always in c#, so for example, from 6.88 to 7, from 1.02 to 2, etc.</p>
<p>How can I do that?</p>


I really like this question:

https://stackoverflow.com/questions/1018610/simplest-way-to-do-a-fire-and-forget-method-in-c

I just want to know that now that we have Parallel extensions in C# 4.0 is there a better cleaner way to do Fire &amp; Forget with Parallel linq?

Simplest way to do a fire and forget method in c# 4.0

I&#39;m pretty confused with how to mix razor and js. This is the current function I am stuck with:


    &lt;script type=&quot;text/javascript&quot;&gt;
    
            var data = [];
    
            @foreach (var r in Model.rows)
            {
                    data.push([ @r.UnixTime * 1000, @r.Value ]);
            }

If I could declare c# code with `&lt;c#&gt;&lt;/c#&gt;` and everything else was JS code -- this would be what I am after:


    &lt;script type=&quot;text/javascript&quot;&gt;
    
            var data = [];
    
            &lt;c#&gt;@foreach (var r in Model.rows) {&lt;/c#&gt;
                    data.push([ &lt;c#&gt;@r.UnixTime&lt;/c#&gt; * 1000, &lt;c#&gt;@r.Value&lt;/c#&gt; ]);
            &lt;c#&gt;}&lt;/c#&gt;

What is the best method to achieve this?

Mix Razor and Javascript code

Intersect can be used to find matches between two collections, like so:

	// Assign two arrays.
	int[] array1 = { 1, 2, 3 };
	int[] array2 = { 2, 3, 4 };
	// Call Intersect extension method.
	var intersect = array1.Intersect(array2);
	// Write intersection to screen.
	foreach (int value in intersect)
	{
	    Console.WriteLine(value); // Output: 2, 3
	}

However what I&#39;d like to achieve is the opposite, I&#39;d like to list **items from one collection that are missing from the other**:

	// Assign two arrays.
	int[] array1 = { 1, 2, 3 };
	int[] array2 = { 2, 3, 4 };
	// Call &quot;NonIntersect&quot; extension method.
	var intersect = array1.NonIntersect(array2); // I&#39;ve made up the NonIntersect method
	// Write intersection to screen.
	foreach (int value in intersect)
	{
	    Console.WriteLine(value); // Output: 4
	}


The opposite of Intersect()

I have a requirement in WPF/C# to click on a button, gather some data and then put it in a text file that the user can download to their machine. I can get the first half of this, but how do you prompt a user with a &quot;Save As&quot; dialog box? The file itself will be a simple text file.

How do I show a Save As dialog in WPF?

I have a long string in JSON format, and I want to convert it into a BSONDocument for insertion into a MongoDB database.  How do I do the conversion?  I&#39;m using the official C# driver.



Convert string into MongoDB BsonDocument

I am writing a function to plot data. I would like to specify a nice round number for the y-axis `max` that is greater than the max of the dataset.

Specifically, I would like a function `foo` that performs the following:

    foo(4) == 5
    foo(6.1) == 10 #maybe 7 would be better
    foo(30.1) == 40
    foo(100.1) == 110 

I have gotten as far as

    foo &lt;- function(x) ceiling(max(x)/10)*10

for rounding to the nearest 10, but this does not work for arbitrary rounding intervals.

Is there a better way to do this in R?


How to round up to the nearest 10 (or 100 or X)?

In Java, I want to convert a double to an integer, I know if you do this:

    double x = 1.5;
    int y = (int)x;

you get y=1. If you do this:

    int y = (int)Math.round(x);

You&#39;ll likely get 2. However, I am wondering: since double representations of integers sometimes look like 1.9999999998 or something, is there a possibility that casting a double created via Math.round() will still result in a truncated down number, rather than the rounded number we are looking for (i.e.: 1 instead of 2 in the code as represented) ?

(and yes, I do mean it as such: Is there *any* value for x, where y will show a result that is a truncated rather than a rounded representation of x?)

If so: Is there a better way to make a double into a rounded int without running the risk of truncation?

-------------------------

Figured something: Math.round(x) returns a long, not a double. Hence: it is impossible for Math.round() to return a number looking like 3.9999998. Therefore, int(Math.round()) will never need to truncate anything and will always work.


Converting double to integer in Java

I have the following code to calculate a certain percentage:

    var x = 6.5;
    var total;
    
    total = x/15*100;
    
    // Result  43.3333333333


What I want to have as a result is the exact number `43` and if the total is `43.5` it should be rounded to `44`

Is there way to do this in JavaScript?



How can I round to whole numbers in JavaScript?

        create table #Events
    (
    	EventID int identity primary key,
    	StartDate datetime not null,
    	EndDate datetime not null
    )
    go
    insert into #Events (StartDate, EndDate)
    select &#39;2007-01-01 12:44:12 AM&#39;, &#39;2007-01-01 12:45:34 AM&#39; union all
    select &#39;2007-01-01 12:45:12 AM&#39;, &#39;2007-01-01 12:46:34 AM&#39; union all
    select &#39;2007-01-01 12:46:12 AM&#39;, &#39;2007-01-01 12:47:34 AM&#39; union all
    select &#39;2007-01-02 5:01:08 AM&#39;, &#39;2007-01-02 5:05:37 AM&#39; union all
    select &#39;2007-01-02 5:50:08 AM&#39;, &#39;2007-01-02 5:55:59 AM&#39; union all
    select &#39;2007-01-03 4:34:12 AM&#39;, &#39;2007-01-03 4:55:18 AM&#39; union all
    select &#39;2007-01-07 3:12:23 AM&#39;, &#39;2007-01-07 3:52:25 AM&#39;


(with apologies to http://www.sqlteam.com/article/working-with-time-spans-and-durations-in-sql-server for harvesting their base sql)

I am trying to find the count of Events that occurred in an hour, so the result set would look like this:

    2007-01-01      12:00     3
    2007-01-02       5:00     2
    2007-01-03       4:00     1
    2007-01-07       3:00     1


I have been playing with dateadd and round and grouping but not getting it. Can anyone help?

Thanks.


SQL Server Group by Count of DateTime Per Hour?

Is there a simple function for rounding **UP** a `DateTime` to the nearest 15 minutes?

E.g.

`2011-08-11 16:59` becomes `2011-08-11 17:00`

`2011-08-11 17:00` stays as `2011-08-11 17:00`

`2011-08-11 17:01` becomes `2011-08-11 17:15`


Content Type	Original Author	Original Content on Stackoverflow
Question	Scott	View Question on Stackoverflow
Solution 1 - C#	BrokenGlass	View Answer on Stackoverflow
Solution 2 - C#	Talljoe	View Answer on Stackoverflow
Solution 3 - C#	SunsetQuest	View Answer on Stackoverflow

How to round up in c#

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

Call an executable and pass parameters

Find type of nullable properties via reflection

Attributions